Babylon is a fortified commune of pacifists in Zombieland: Double Tap.
Babylon is surrounded by high walls to keep out zombies, using a van as a makeshift gate. Inside, the compound is filled with millennials and peaceful folk, with a massive tower rising up from roughly the center of the compound. The tower in real life is in Atlanta nearby the Spaghetti Junction. The tower was once a hotel but currently abandoned. Culturally, the commune is stereotypically "hippy", with two rules; no guns and no group sex. The latter rule is quite lax, but the former is rigidly adhered to, with all guns being melted down prior to entry. The commune give out peace sign necklaces made from the destroyed weaponry.
Berkeley and Little Rock arrived at the compound and surrendered their weapons, overjoyed to be with people their age. Eventually Tallahassee, Wichita, and Columbus caught and reunited with her (with one pacifist assuming they were about to have group sex, happily attempting to join in until they stopped him). Tallahassee eventually departed, but quickly returned with news of an incoming horde of T-800 zombies drawn by the fireworks the Babylonians were firing into the air.
Without guns, the pacifists prepared a defense using a fire trap and a channel atop their tower. The fire trap, fueled by a massive biofuel container that exploded and killed many zombies, was only partly successful. Tallahassee, Wichita, Columbus, Little Rock, and Nevada then fled back into the tower and drew the zombies to the roof. There, the pacifists had formed two human barriers with only one path, leading to the edge of the tower. Tallahassee sprinted for it, grabbed onto a hook, and the zombies tumbled to their deaths in their attempt to follow him.
After bringing Tallahassee safely back to the tower, the last of the zombies had been destroyed and everyone celebrated. Madison then joined the pacifists with Berkeley while Tallahassee, Wichita, Columbus, Little Rock, and Nevada left the commune for the open road.